Professional Training and Consultation

15-20 May 2004, Dammam

API 653 PREPARATORY COURSE

Final Exam Closed Book

1.

The complete or partial removal and replacement of more than 12 inches of a vertical weld joining shell plates is considered a : (a) minor alteration; (c) major alteration; (b) minor repair; (d) major repair.

2.

A single film technique was used to make a radiograph using a Cobalt-60 source. The minimum permitted density in the area of interest is: a. b. c. d. 4.0 1.8 2.0 1.3

3.

At what level is the atmosphere considered oxygen-deficient? a. b. c. d. Less Less Less Less than than than than 19.5% 21.9% 24.9% 16.0%

4.

__________ is a change from previous operating conditions involving different properties of the stored product such as specific gravity or corrosivity and / or different service conditions of temperature and / or pressure: (a) Re-rating; (c) Repair; (b) Change in service; (d) Reconstruction

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5.

Describe how a liquid penetrant examination should be performed in order to detect discontinuities which are open to the surface. a. b. c. d. Clean the part, apply the developer, apply the penetrant, remove excess penetrant, inspect the part, clean the part Clean the part, apply penetrant, remove excess penetrant, apply the developer, inspect the part, clean the part Clean the part, apply the developer, apply the penetrant, inspect the part, remove excess penetrant, clean the part Clean the part, apply the developer, apply the penetrant, inspect the part, clean the part

6.

A radiographic technique in which radiation passed through two walls and both the walls are viewed on the same radiograph (double wall, double image ellipse) the limitation for the outside diameter is: a. b. c. d. 3-1/2 2 4 Any diameter possible

7.

Information needed when determining the rate of corrosion: a. b. c. d. Original thickness or last inspection thickness Current thickness Length of time in service All the above

The definition of a confined space is: a. b. large enough to enter restricted means of entry

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c. d. 10.

not designed for continuous occupancy all of the above are required

An individual stationed outside one or more permit spaces who monitors the authorized entrants and orders the authorized entrants to evacuate the permit space under unsafe conditions. This individual is referred as: a. b. c. d. Supervisor A qualified person An attendant None of above

11.

A corroded area of a tank bottom plate is repaired by welding overlay. There is no change in the rating and no change is made on the nameplate. Which of the following is the correct term to describe this process? a. b. c. d. Reconstruction Repair Alteration None of the above

Hot taps are not permitted under which of the following conditions? a. b. c. d. On plates requiring PWHT. On ultrasonically sound plate On tanks with dia. more than 80 feet. None of above.

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14.

For a tank of 160ft dia. Is to be checked for shell settlement. Minimum number of equally spaced settlement points to be checked will be: a. b. c. d. 16 20 24 12

15.

For a tank made by reconstruction, under what circumstances may a new shell-to-bottom weld be exempt from hydrostatic testing? a. b. c. d. When the root pass has been visually inspected and the final weld is fully examined, visually and radiographically. Reconstructed tank is never exempted from hydrostatic testing. When the root pass has been visually inspected and the final weld is fully examined, visually and by vacuum box. When the welding method has been reviewed and approved by an engineer experienced in tank design in accordance with API Standard 650.

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c. d. 18.

ASME Section IX All of the above

Widely scattered pits may be ignored under the following conditions a. b. c. d. Where the service fluid is corrosive or hard to hold. If sum of bit length along 8 vertical line does not exceed 2 When no pit has depth which results in the minimum thickness being less than one-half the minimum acceptable thickness of the shell plate exclusive of corrosion allowance b and c

19.

For verification of radiographic sensitivity and image quality, which of the following are used: a. b. c. d. Cassettes Penetrameters Cameras Collimators

Welders qualifications shall expire as they do not weld :(a) (b) (c) (d) within a given process for a 6 month period; using a given procedure for a 6 month period; on a tank for 6 months; for a 3 month period.

36.

What are penetrameters used for :(a) (b) (c) (d) A penetrameter is used for radiographic technique in that it serves as an image quality indicator It indicates the magnetic properties of the materials To check penetrant quality in PT inspection To check weld penetration during welding

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When reviewing a radiograph, a light image of the letter B can be seen on the film with dark background. (a) (b) (c) (d) This is cause for rejection; This is not cause for rejection; This is the same as a light letter B; An unusual exposure. safety hazard existed during the

The nondestructive examination method to be used for a particular inspection should be determined by the: a. b. c. d. Availability of certified NDE examiners. Length of time since the last inspection. Age of the component to be inspected. Type, location, and orientation of the expected flaws.

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43.

Most suitable UT equipment for use on rough surface is: a. b. c. d. CRT type Direct readout type Either a or b, anything is okay a and b, both are not suitable

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